IsItAGoodCar
Reliability Guide

Common Problems with the
2003 Nissan Micra Mk3 (K12)

The K12 Micra went on sale in the UK at the end of 2002 and was built at Sunderland, with a tall body, a sliding rear bench and keyless entry high in the range. Petrol power came from 1.2 and 1.4 units, with a Renault-sourced 1.5 dCi diesel.

What changed for 2003

  • •1.2-litre 79 bhp and 1.4-litre 87 bhp petrol engines, plus a 65 bhp 1.5 dCi
  • •More powerful 82 bhp 1.5 dCi added in September 2003
  • •Sunderland-built three- and five-door hatch with a sliding 60/40 rear bench
  • •Keyless entry and start, automatic wipers and climate control on higher trims

Common MOT watch-outs

  • !Corroded front crossmember and radiator support, a known structural failure point
  • !Worn front wishbone bushes and broken coil springs on rough UK roads
  • !Corroded rear brake pipes and weak handbrake performance on early cars
4
Known Issues
2
Serious
1
Moderate
1
Minor

All Known Issues

Timing Chain Stretch

SeriousEngine

The 1.2 and 1.4 petrols can develop chain rattle and correlation faults, usually worsened by infrequent oil changes.

Est. Repair Cost: £500–£900
Warning Signs:

Cold-start rattle, Engine light, Flat running or hesitant pickup

What to Inspect:
  • Start from stone cold
  • Scan for cam/crank correlation codes
  • Ask about oil service intervals
Verified by IsItAGoodCar Research Team

Electric Power Steering Failure

SeriousSteering

The column motor or control unit can fail, leaving heavy steering and a PS warning light.

Est. Repair Cost: £300–£650
Warning Signs:

PS warning light, Suddenly heavy steering, Intermittent steering assistance

What to Inspect:
  • Check steering effort from lock to lock
  • Look for a PS light that goes out and returns
  • Verify whether the column has been replaced before
Verified by IsItAGoodCar Research Team

Steering Lock and Intelligent Key Faults

ModerateElectrics & Electronics

Keyless cars can suffer steering-lock or key-recognition faults that prevent the engine from starting.

Est. Repair Cost: £200–£500
Warning Signs:

No response to start command, Key warning lamp, Intermittent steering lock release

What to Inspect:
  • Try both keys
  • Cycle the ignition several times
  • Ask whether the steering lock unit has already been replaced
Verified by IsItAGoodCar Research Team

Boot Latch Microswitch Failure

MinorBodywork & Rust

The boot-release button fails and leaves the tailgate stuck shut until the switch is replaced.

Est. Repair Cost: £40–£100
Warning Signs:

Boot won’t open from the outside, Intermittent release button

What to Inspect:
  • Open the boot repeatedly
  • Inspect the rubber switch for splitting or prior repair
Verified by IsItAGoodCar Research Team

Buying Tips for 2003 Nissan Micra Mk3 (K12)

  • Inspect the front crossmember behind the bumper for rot before anything else
  • Listen for timing-chain rattle from cold and check for a stamped oil-change history
  • Test the keyless entry and boot release, both common K12 electrical failures
2004
Check a 2003 Nissan Micra Mk3 (K12) by Registration